Arc Warden + Ursa

Why this works

Picking both these cores creates a natural conflict over who gets to use the map. Both Arc Warden and Ursa are farm-hungry heroes that want to occupy the safest, most profitable areas for themselves. Arc Warden looks to control a lane and the adjacent jungle with his Tempest Double, methodically building his own advantage. Ursa wants to be more active, using his early power spikes to hunt for kills and secure Roshan. While Arc's Magnetic Field can offer some utility in a fight, it doesn't provide the lockdown or catch Ursa needs from his allies to get on top of mobile targets.

As the game moves into the mid-game, your team often feels pulled in two different directions. Ursa will try to force fights or smoke ganks, but Arc Warden is usually far away, split-pushing a lane and unable to contribute his damage. This makes it hard to coordinate objectives or respond to enemy aggression as a group. The enemy team can exploit this by isolating one core while the other is busy farming. Your team is forced to choose between grouping for Ursa's brawls or creating space for Arc Warden, and it’s difficult to do both effectively.